code: def zero_epsilon(
      unused_decay_period,
      unused_step,
      unused_warmup_steps,
      unused_epsilon,
  ):
      return 0.0
  
imports: import functools
  from absl import logging
  from dopamine.jax import losses
  from dopamine.jax import networks
  from dopamine.jax.agents.dqn import dqn_agent
  from dopamine.jax.agents.rainbow import rainbow_agent
  from dopamine.metrics import statistics_instance
  from dopamine.replay_memory import prioritized_replay_buffer
  import gin
  import jax
  import jax.numpy
  import numpy
  import optax
  import tensorflow
label_desc: Use image node_id 1 for calling a global function with example usage: zero_epsilon(unused_decay_period, unused_step, unused_warmup_steps, unused_epsilon) and returns: int